Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

William P Guinan, MD and Associates LLC

Organization Obstetrics & Gynecology Physician · NPI 1528506516

William P Guinan, MD and Associates LLC is an Obstetrics & Gynecology Physician in South Windsor, Connecticut. Licensed in Connecticut. Registered with an NPI since 2017.

Licensed in
CT
In the registry since
2017
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

25 Oakland Rd
South Windsor, CT 06074
Phone: (860) 644-9578
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Obstetrics & Gynecology Physician (primary) Taxonomy 207V00000X · Licence 028847 (CT)

Record details

NPI number1528506516
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official William Guinan — President · (860) 644-9578
NPI enumeratedFebruary 9, 2017
Last updated in NPPESFebruary 9, 2017
Mailing address25 Oaklalnd Road, South Windsor, CT 06074

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